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Mechanical chipping of wood waste for fuel.
Sagging of the bow and stern of a ship with respect to the amidships section.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The drooping of the extremities and consequent convex appearance of any timber supported in the middle.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.